who - show who is logged on
who [
OPTION]... [
FILE | ARG1 ARG2 ]
Print information about users who are currently logged in.
-
-a, --all
- same as -b -d --login -p
-r -t -T -u
-
-b, --boot
- time of last system boot
-
-d, --dead
- print dead processes
-
-H, --heading
- print line of column headings
- --ips
- print ips instead of hostnames. with --lookup,
canonicalizes based on stored IP, if available, rather than stored
hostname
-
-l, --login
- print system login processes
- --lookup
- attempt to canonicalize hostnames via DNS
- -m
- only hostname and user associated with stdin
-
-p, --process
- print active processes spawned by init
-
-q, --count
- all login names and number of users logged on
-
-r, --runlevel
- print current runlevel
-
-s, --short
- print only name, line, and time (default)
-
-t, --time
- print last system clock change
-
-T, -w, --mesg
- add user's message status as +, - or ?
-
-u, --users
- list users logged in
- --message
- same as -T
- --writable
- same as -T
- --help
- display this help and exit
- --version
- output version information and exit
If FILE is not specified, use
/var/run/utmp.
/var/log/wtmp as FILE
is common. If ARG1 ARG2 given,
-m presumed: 'am i' or 'mom likes' are
usual.
Written by Joseph Arceneaux, David MacKenzie, and Michael Stone.
GNU coreutils online help: <
https://www.gnu.org/software/coreutils/>
Report any translation bugs to <
https://translationproject.org/team/>
Copyright © 2022 Free Software Foundation, Inc. License GPLv3+: GNU GPL
version 3 or later <
https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO
WARRANTY, to the extent permitted by law.
Full documentation <
https://www.gnu.org/software/coreutils/who>
or available locally via: info '(coreutils) who invocation'